... , alias : surge protector, surge arrester) is suitable for TN-S,TN -C-S,TT.IT etc. power supply system of AC 50/60Hz ... ,installed on the joint of LPZ1and LPZ2 and LPZ3,it's designed according to IEC61643-1,GN18802.1, it adopts 35mm ... means abnormal, Kevin wiring mode, remote-signaling output interface.it's also could be replaced for the module when has operating ...